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Full text of "Architectural granite,the noblest of building stone."

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ARCHITECTURAL 
GRANITE 



"The Noblest of Building Stone'' 



No. 1 of the Granite Series 



National Building Granite Quarries Assn., Inc. 



BOSTON, MASS. 



R.pr.nt.d from SWEET'S CATALOGUE 



Architects may easily secure for the owner a larger 
number of responsible competitive granite bids by re- 
ferring their requests for bids through the Association. 
Architects and general contractors are invited to advise 
the Association concerning prospective work, calling for 
granite, giving the date where possible when bids will 
close. This information will be transmitted to the 
members and will result in bids which might not other- 
wise be secured. 

Architectural Uses of Granite. 

Granite has many and varied qualifications adapting 
it for architectural uses. Its natural qualifications are 
unsurpassed by any other material for exterior building 
purpusev '1 he durability, hardness, and toughness of 
granite is so well established that it scarcely needs am 
comment. Granite occurs, and is produced, in a wide 
range of colors and textures. The color plates give some 
idea of this range, but space is too limited to show the 
great variety of texture produced by the many grades <>\ 
finish, and combinations of different finishes. 

Granite is often considered as adapted only to 
plain or massive work. That granite may be carved with 
as much fineness and delicacy of detail as marbl< 
instance, has not been generally known, but is neverthe- 
less a well established fact. There are many fine ex- 
amples where granite carving and detail can not be sur- 
passed in any material- with the added feature that this 
detail will retain its sharpness and delicacy indefinitely, 
unaffected by action of weather or time. 

Granite has a well recognized value as a commercial 
building material, due to its strength and durability. It 
is also preeminently adapted for perpetuating archi- 
tectural masterpieces, where ultimate results outweigh 
mere cost considerations. Modern tools and appliances 
have made it possible to execute fine architectural details 
and carving in granite within reasonable time and cost, 
having in mind the worth-while result. 

I )] sign mi I )i i mi ro Ri i —When cost is 

an important factor the application of certain funda- 
mental principles in design, which take into account the 
methods of cutting granite and the elimination of minor 
details, which tend to increase expense out of pro- 
portion to their architectural merit, will enable very sub- 
stantial savings to be made. 

The best results will be secured at the minimum of 
cost when details are worked out for granite rather than 
jusl For stone as is generall) the case. It has frequentlj 
:u-d thai application of these principles has reduced 
the total cosl very materially. The Association will ap- 
preciate every opportunity to make suggestions in this 
o mnection. 

Description of Granite. 

is a holocrystalline, granular rock of igne- 
rigin. The essential constituents are quartz and a 
potash feldspar. The principal accessor) mineral is 
usually either mica or hornblende. Other minerals oc- 
cur in small quantities, but are generally secondary to 
nti( >ned 

u cessory i rs in two forms — 

black mica . hite mica or muscovite. The 

hornblende in buildii is usually black or a very 

dark gi 

Granites are usually clasified by the predominating 
accessory mineral. The most common varieties of build- 
ing granites are known as biotite, mus iotite- 
ovite, muscovite-biotite, hornblende, biotite-horn- 
blende, and quartz-monzonite. 

ral rule the color of granite is determined 



by that of its feldspars, and the hardness by the quartz 
and feldspars, varying according to the proportion and 
hardness of the feldspars. 

Colors and Textures — The granites produced by 
Association members include many shades of gray, lav- 
ender, pink, red, green, brown, huff and white. Natural 
texture varies according to the distribution and size of 
crystals of the constituent minerals. Granite is graded 
as to -rain by the size of its feldspar crystals, from very 
fine to very coarse. The size of crystals or coarseness 
of grain has practically no bearing on the structural 
qualities, but gives to granite the variety of texture 
which adds greatly to its architectural possibilities. 

Physical and Chemical Tests. 

The standard building granites so far exceed all 
ordinary architectural requirements as to chemical and 
physical properties, that specific data on tests has little 
or no bearing upon the relative architectural merits of the 
different granites. 

In confirmation of this, the following statement, 
prepared by Mr. G. F. Loughlin of the U. S. Geological 
Survey is quoted in full : 

"Physical tests have supplemented actual experience ii> 
the use <>t granite 1»\ showing that it exceeds the require- 
ments for tlu- tallest and most exposed buildings to a greal 
degree. With this fact demonstrated, tin- actual results of 
strength and porosity test- arc of little significance; far less 
than an accurate knowledge of the component minerals and 
their state oi preservation as revealed b> the microscope. 

"Recorded crushing strengths of granite ma> serv< 

relative measures of soundness provided the tCStS were all made 

"D machines that are calibrated alike and provided enough 
samples of each granite are tested to show its range m 
th, also provided all samples are prepared with equal 
tare; hut as even the lowest recorded results obtained under 
unfavorable circumstances are far above the maximum re- 
quired for the tallest buildings, the fact that the crushing 
strength of one granite is somewhat more than that of another 
should be of no concern to the architect or builder. Onl) 
when monuments of solid masonry and of unusual height are 
to be erected or when paving stone for extremelj heavy 
traffic is to be laid, do crushing tests of granite need any 
i onsideration. 

"Transverse breaking strengths of granites arc also quite 
adequate to support am load that they are expected to sup- 
port in buildings. There is much more danger of cracking 
from uneven settling of foundations than from overloading, 
and examples can he shown where granites with the highest 
ed transverse strength have cracked when the load 
upon them was relatively low. 

"Issues have been raised at times regarding the porosity 
of granite. Unweathered granites such , plied to the 

high class building trade arc for all practical purj 
lutely impervious except close to the surfaces of I. locks where 
minute cracks have been developed during splitting or tooling. 
'Porosity 1 varies with the number and depth of these cracks. 
Differences in 'porosity' may indicate which granites are 
most likely to 'blister' from frost action if tooled too 
severely. If 'blistering* takes place it extends only to the 
depth of the minute surface tracks and thereafter weathering 

effects are imperceptible. That granite weathers in uai 
undisputed, hut conditions of weathering in the walls of a 
building are much and not strictly comparable, and 

the lime necessary for unweathered and properl) fabi 
granite v> show appreciable effects of v. 
is too long to cause concern except lor monumental *\r\v 
intended to last for thousands of 

"Chemical analyses of granite, as usually recorded, an 

little or no value from the builder's 5t2 

interpretation the\ require Such Stud) 

supplemented by examination of the granite in the rpiarry and 
in the building, will disclose the essential 
weathering qualit I 

study max result in a call for special chcim 
ample, to determine permana "or. and t 1 

directions should render the test thor 

ranites, however, con • 

and in structures supplemented by • 
all the information needed v. 
chem 



CLASSIFICATION OF BUILDING GRANITES 

Quarried and cut by Association Members 

White, Gray, Lavender, Pink, Red, Green, Buff, Brown 



Col .r 
plate 

number 


Name of granite 


Producer and manufacturer 


Location of qi 


Grain 


Color 


Technical 
classification 


1 


Bethel White 


Woodbury Granite Co., Hardwick. Vt. 

North Carolina Granite Corp , Mr. 

Airy, N. C. 
Lemmerman & Hoffman Granite Co., 

Mt. Airy, N. C. 
Mt. Airy Granite Cutting Co., Mt. 

Airy, N. C. 
J. D. Sargent Granite Co., Mt. Airy, 

N. C. 
Maine & New Hampshire Granite 

Corp., North Jay, Me. 
H. E. Fletcher Co., West Chelmsford, 

Mass. 
Milford Pink-Victoria White Granite 

Co., Milford, Mass. 
Lovejoy Granite Co., Milford, N, H. . 

1 >untain Granite Corp., Stone 
Mountain, Ga. 

John Swenson Granite Co., Concord, 
N. H. 

New England Granite Works. Wes- 
terly. R, I. 

Booth Bros. & Hurricane Isle Granite 
Co.. 208 Broadway. New Vork.X.V. 
New England Granite Works, Wes- 
terly. R. I. 

Woodbury Granite Co., Hardwick. Vt. 

Rockport Granite Co., Rockport, 
Mass. 

Rodgers Granite Corp., 271 W. 125th 
St., New York, N. Y 

John L. Goss Corp., Stonington, Me.. 
Maine & New Hampshire Granite 


Bethel Vt 


Coarse inclined to 
medium 


faintly mot- 

1 with gray.. . . 

Very light gray 

Very light gray 

Very light gray 

Very light gray. .... 

Very light gray 


Quartz-monzon ite. 


3 


Mount Airy 


Mount Airy, X. C 

Mount Airy, N. C 

Mount Airy, N. C 

Mount Airy, N. C 


i 






Biotite. 


3 






Biotite. 


3 


Mount Airy 

North Jay 




Biotite. 


4 






6 


Chelmsford Gray 

Victoria White 

Milford, N. H 

I >untain 


West Chelmsford, Mass.. . 

Fitzwilliam, N. H 

Milford, N. H 

■ 


Fine and medium . 
Fine 




7 






5 


Fine inclined to 

medium . 

Moderately fine . . 

Fine to medium . , 

Fine to medium . . 

Fins 












g 


Light to medium 

gray 
Light to mi 


muscovite. 


8 










Connecticut White. 

Westerly Blue-White. . . 

Woodbury Gray 

Rockport Gray 

Stonington Pink-Gray.. 


Waterford, Conn 

Westerly, R. I.. 

Woodburv, Vt 






Medium buff gray, 

hammers light. . . . 

Bluish gray 

Me-Jium gray 

Medium gray, slight 

bluish-green tinge . 
Pinkish -la vender 

tinted, medium 






Fine 




10 




Biotite 


9 
12 


Deer Isle, Stonhi 

Crotch Island. Stonington, 
Me . . . 


Medium to coarse. 


Hornblende 








11 


Pinkish- lavender 
tinted, medium 


Biotite 
















13 


Light pink mottled 
with large gray 
and small black 


Biotite 




Milford Pink. 




Medium to coarse. 

Coarse inclined to 
medium 

Very variable me- 
dium to coarse 
gneissoid tex- 






Pink-Victoria White Granite 
Milford, Mass. 

Booth Bros & Hurricane Isle Granite 

Co., 208 Broadway. New York.N.Y. 

Milford Pink-Victoria White Granite 

New England Granite Works, Wes- 
terly. R. I. 

Rockport Granite Co., Rockport, 
Mass. 

Rockport Granite Co., Rockport, 
Mass. 

& X. H. Granite Co., North 
1 ■ ", Me. 

Booth Bros. & Hurricane Isle Granite 

Co., 208 Broadway. New York.N.Y. 

Rockport Granite Co., Rockport, 




14 


Light to medium 
pink, black mica 

spottings 

Pinkish-gray 

Medium reddish- 










Biotite 
Biotite 


1 




Stony Creek, Conn 

Westerly, R. I 






Red Westerly 






Rerldish-gray speck- 
le 1 with black. . . . 

Dark reddish-gray 
with white and 
pinkish feldspar. . 

Dark olive- green- 
gray with black 
spottings 

Dark yellowish- 
greenish-gray with 
black spottings . . . 

Light grayish-buff . . 

Dark yellow -brown, 
bright rust- 
brown, light 
yellow-brown 




16 


Medium inclined 
to coarse 


Biotite 


1> 


Moose- a-bec Red 

Rockport Sea-Green . . . 
Conway-Green 


Jonesport, Mc 

Rockport, Masr, 

Redstone, X. II 


Biotite 


18 
19 


Medium to coarse. 


Hornblende 


17 


Coarse inclined to 
medium 


Biotite 




Rockport Seam-Face . . 





















Plate No. 1, Stony Creek 
Granite. 

Quarry at Stony Creek, 
Conn. 

Quarried and cut by : 
Milford Pink- Victoria 
White Granite ( o. 
( Main ( mice | Milford, Mass. 

Note — The marked feature of 
this granite is its very irregular 
texture which it is impossible to 
do justice to in such a small sam- 
ple. This is technically "biotite 
granite gneiss" and its unusual 
texture is due to pegmatitic injec- 
tion, flow structure and gneissic 
foliation. 




Color Plates. 

riates Nos. 1 to 19 inclusive are color reproductions 
of some of the principal building granites produced by 
Association members. These reproductions are full size 
as to grain or texture and approximate as to color. 

This set of color plates does not show all the gran- 
ites, nor do they show the many different finishes which 
are applicable to each granite. In general, the colored 
granites have been reproduced from a polished finish 
and the light colored or gray granites from hammered 
finishes, including medium pointed, four-cut, six-cut, 
and eight -cut. 

It should be borne in mind that, as a rule, polishing 
produces a darker tone and brings out the color of each 
component crystal, while a hammered finish shows up 
much lighter and softens the colors of the contrasting 
minerals. 

This collection of color plates will serve a two-fold 
purpose : 

First, they will give at a glance some idea of the 
great range in colors and texture in American granites. 
Second, they will serve a* preliminary >am;>Ie-i and as- 
sist the architect in making preliminary selections for 
specific purposes, thereby avoiding the necessity of se- 
curing actual samples until the final selection is to be 
made. 

Quarrying. 

In selecting granite for building purposes, the 
quarry is the first essential and most vital consideration. 
The principal requirement of a building granite is abil- 
ity to produce, in quantity, granite of the particular 
color, texture and sizes required and the quarry must he 
so equipped that the output may be handled and shipped 
promptly and at a rate to meet cutting requirements. 

The Association quarries without exception meet 
the above requirements. They are all quarries of es- 
tablished reputation and have been developed to meet 
the requirements of quantity production. The only 
practical limit to sizes of individual blocks for specific 
purposes is that of transportation. 

Most of the quarries are operated in conjunction 
with their own cutting and finishing plants, which handle 
the bulk of the quarry output, although several of the 
quarries ship part of their output in the rough to out- 
side cutting plants and one Association quarry ships 
practically all of its output in the rough. 

Cutting and Finishing. 

Modern time requirements demand that building 
granite plants be well equipped with machinery and ap- 
pliances for handling and manufacturing. Association 
plants include the largest and best equipped plants of 
their kind in the country. 

Granite is delivered from the quarry in rough 
blocks — some already split to approximate dimension 
sizes and others in random sizes to be drilled and split 
to dimension or sawed into slabs for ashlar or polished 
work. Pneumatic drills are universally used for drilling 
up rough stock or slabs, and pneumatic hand tools for 
cutting the edges, mouldings, and for carving. 

Pneumatic surfacing machines rough down large 
surfaces, and point or cut them to the form and finish 
required. Surfacing machines also bush sawed slabs to 



the various cut finishes, core and rough out heavy checks 
or mouldings, recess for panels, rough and finish the sur- 
face of columns, rough out the flutes and similar work. 

Polishing machines are used for producing rubbed, 
honed, or polished work, from surfaces prepared either 
by surfacing machines or saws. Steel shot, carborun- 
dum and emery are used as abrasives for grinding down 
the surfaces, and heavy felt faced wheels gloss the sur- 
face thus ground, using oxide of tin and water. Small 
surfaces, mouldings, etc., are rubbed and polished by 
hand. 

Round work, such as balusters and columns, 
are usually turned to required finish in specially built 
lathes using disc cutters. Lathes are also used for pol- 
ishing round work. Several Association plants are 
equipped to do turned work for plants not so equipped. 

Carborundum machines are coming into more gen- 
eral use in granite plants for special work such as cut- 
ting checks, rabbets, arrises, and for freeing flutes and 
mouldings. 

Saws are used for cutting up blocks into slabs of 
various thicknesses, leaving smoothly finished surfaces, 
ready for bushing or polishing. 

Handwork is required in finishing practically every 
piece of architectural granite, and a good journeyman 
granite cutter is one of the most skillful craftsmen in in- 
dustry today. No tool or machine can displace this 
craftsman — his skill of hand and eye is as indispensable 
today as when the Egyptians cut their granite temples. 

The handling, machining, sawing, and polishing of 
granite consumes power in relatively large quantities, 
and the power plant is one of the most important acces- 
sories to the direct cutting and finishing operations. 
Blacksmith shops, carpenter shops, and repair shops are 
also necessary accessories. 

Standards of Quality. 

It will be noted under "Physical and Chemical 
Tests" that these standard building granites come well 
within all possible requirements of architectural use, so 
that standards of material are unnecessary. The cutting 
properties of the granites from different quarries vary 
quite materially and it would be very difficult to define 
standards of workmanship. 

Quality of workmanship has been graded by usage 
into three classifications, which, while somewhat elastic 
and difficult to define exactly, are pretty well established 
and recognized by the manufacturers. 

Monumental Building Grade — For permanent 
buildings designed to perpetuate public pride or civic 
spirit, where utility and economy are subordinate to 
architectural merit, such as state house, courthouse, li- 
brary or public memorial. 

Good Commercial Grade — For high class build- 
ings designed both for utility and to express something 
of the character, dignity and stability of the occupancy. 
such as banks or insurance buildings, high class office 
buildings, churches, schools, etc. 

Ordinary Commercial Grade — For buildings 
where architectural appearance is subordinate to utility 
and governed by economic considerations. Workman- 
ship will meet requirements of structural safety, but not 
carried beyond the point of a good appearance to the 
casual observer. 



Plate No. 2, Bethel White 
Granite. 
Quarry at Bethel, Ver- 
mont. 

Quarried and cut by : 

Woodbury < .ranite Co. 

i Alain Office) llardwick, Vt. 

. -Actual granite much whiter 
than reproduction. 



Plate No. 3, Mount Airy 
(■ranite. 

< juai t\ .ii Mount Airy, 
X * . 

Quai ried b) 
North Carolina Granite 

Cor re i • \ 

(Main Office) Mount Airy, 

X.C. 

( ut by : 

J. D. Sargeni Grani rE Co. 

Mount Airy, N. C. 

Lemmerman & Hoffman 

Granite Co. 

Mount Airy. N. C 

Mci \t Ann Granite 

Cutting Co. 

Mount Airy, N. C 

Note.— Actual granite whiter than 
reproduction. 



Plate No. 4, North Jay 
Granite. 
Quarry at North Jay, Me. 
Quarried and cut by : 

M \7\ & Xl W i 1 WM'SIHRE 

Granite ( orporation 

i Mam t Office) North Jay. Me. 






1 . &r.x 



Surface Finishes. 

H* : entl) used for 

ler of their 

and polished. These 
times mis- 
applied. 'J he following brief d< - 

< i) : 

' pensive finish, 

The 

■ 

■ 

Mm. and fine p< 

htly 

uld 









• 






- 





















call) the same routine as above described for hand bush- 
Sawed surfaces arc bushed under the surfacing 
machines, in which case the pointing process is un- 

-;ir\ 

rEN-cin and Twelve-cut— These surfaces are 
also produced, but the finer finishes arc less frequenth 
[jular building work, being more applicable to 
imental or special work. 'Texture and chai 
phasized by ihc coarser cuts. 

tBEn \m. Honed Work— Produced by grinding 
a pointed or sawed surface under the polishing mill. 
(1k ' grade of rubbing is determined by the extent to 
which this grinding process is carried, from « 
ith small surface scratches, adapted to 
requiring fine finish but not close to the eye, to honed 
ish which is ih,- lasl stage just before glossing, wiih 
■■■■■'■ mi fa< i . practicall) free from scratches. 
ces and mouldings are generally rubbed or 
•1 and the relative expense of this finish is 
Jecti d b) th( amounl of handwork neo 

Poi ism d \\ ork Produced by glossing, under i 

Felt < oated m heel, a surface pre* iousI) rubbed and 

boned \ durable and mirrorlike polish 'can only be 

ng the grinding and glossing processes 

tag< h a\ ing the surfa( 

dull spots, or indications of stun marks fr 

tool I 

n mi thods, practically evei \ standard 
1 to a satisfactory gloss suitable 
■ mosl ordinary requiremi < rail) 

ontaining the leasl n 
ad more durable polish than the 
ith abundant mica particles. 
1 th< -in fai i foi polishii 

ri at a the [>oIisliin| 

lling, and wli- I 

) hand oi mai hine poin 
ial should h< |( 
aished sui I 

Sdectfag th< Finish. 

' t Mil ill. 



Plate No. 5, Milford (N. H.) 
Granite. 

Quarry at Milford, X II. 
Quarried and cut by : 

LOVEJOY ( rRANITE Co. 

Milford, N. H. 
Cut 1i> : 

H. E. Fletchi r Co. 
West Chelmsford, Mass. 



Plate No. 6, Chelmsford Gray 
Granite. 

Quarry at West Chelms- 
ford, Mass 

Quarried and cut by : 

11. E. Fletcher Co. 

West Chelmsford, Mass. 




Plate No. 7, Victoria White 
Granite; Fitzvvilliam 
Granite. 
Quarry at Fitzwilliam, 

x. if 

Quarried and cut by : 

Milford I'i \ k-Victori \ 

White Granite Co. 

( Mam ( office i Milford, Mass. 




,3M f j 

Gil 

. 
I 

* < -ceo 

■ - c j a u -. r c 



PUS 



I 

or k??i i cXi 




- 



H 



DJLAWV BY 






4fo 

71 HI su:ua- 



CX>ST U AlVi .^ S1S fOIL ESTIMATING 
^OST OF C UNIT! MOULDINGS 



Sot bj'AYrVMDNG 

TO SCAJ.I -J 

L>ATJ i 



Plate No. 8, Concord Granite. 

Quarries at Concord, 
N. H. 

Quarried and cut by : 
T in-; John ^ \v i : NSON Gra x ite 

Co. 

I Main Office) Concord, N. II. 

New England Granite 

Works 

(Main Office) Westerly, R. I. 



,<* 






Plate No. 9, Rockport Gray 
Granite. 

Quarries al Roi kp< »i i . 
Via 

Quarried and cul I 
Rockpori Graniti Co 
j Main « >ffi< i i Rockport, 
M i 



% 



ft •* 



id 






* d 



Plate No. 10, Woodbury Gray 
Granite. 

Quai r) al W oodbui 
Qu d cul b) : 

\\ HDiH'.rm Gra n eti * 1 1 
i Main I "i„ e I I lardw ick, \ i. 





DRAW N hV 



C0MPAK\TI\'LDLTAIL5 SHOWING LCONOVtICAL DESIGN 

FOR. GV \M I i. WOl 






[SCALE. 



>ATt Jt Sf .^0 



Plate No. 11, Goss Pink 
Granite, Crotch Island 
Granite, Stonington 
Pink Granite. 

Quarry at Crotch [sland, 
Storrington, Me. 

Quarried by : 
John L. Goss Corporation 
(Main Office) Stonington, Me. 
( ut b) 

1 1. E. Fletcih r Co 
\\ est ( Chelmsford, Mass. 
New England Granite 

\\ 0] 

Westerly, Rhode [sland 
Km k port Granite I o 
Rockport, Mt 
The John Swenson ( >\< \ 

Co, 

Concord, X. II. 

— and others 



' i 














ci 



&•' 



i"*" 

'£•• 



u»F^ 



Plate No. 12, Stonington 

Pink-Gray Granite, 
Deer Isle Granite, 
Stonington Pink 
Granite. 

* \ al I >« :er fsle, 
Stonington, Me 

Quarried an 1 cul 

RODGl RS ( rR W II I 

Main ( >ffic< I 271 W< •• 125th 
St., New York. X. \ 



3 


j$ni 




• *- 




f r . 




\ 


\fr * ' ,l *, " 


• • 




I 


] 'j " v - 


M 


/ " ' ' 


•/■< 







Plate No. 13, Conway Pink 
Granite. 
Quarry at Redstone, 

N. Ik 

Quarried and cul h> 

M \i m: & Xi w Haw i-iiire 

( rR VNITE ( 0RP0RATI0J< 

(Main ( >ffice i North Jay, Me. 





VA- SCALE DETAILS OT THR-EL SIMPLE GRANITE CG&NiCES 




MLS SHOW1V FOE. GEAHITE 




; 



■ 






■ r 










: b . c 







' 



-I Jj 



' 
















. 






^ DRAWN BY 

3GDl 



TYPICAL GRANITE 
SHGWIMG PPACTir.M-MLTHOD: I 



;iAihjrsf-/o| O 



Plate No. 14. Milford Pink 
Granite. 


IT 




Quarry at Milford, Mass. 


w 


Quarried and cut by : 




Milford Pink-Victoria 




Win i i Granite Co 




(Main Office) Milford, Mass. 




I \ 



Plate No. 15, Moose-a-bee 
Red Granite. 

Quarry at Jonesport. Me. 
Quarried and cut by : 
Rockport Graniti 

( Main Office) Rockport, 

Ma- 



Plate No. 16, Red Westerly 
Granite. 

Quarry at Westerly. R. T. 

Quarried and cut 1 *y : 

New England Granii i. 

Works 

(Main ( >ffice) Westerly. R.I. 



*s 






r 3 



** 



*. a 




#? *¥ if , %j 







Granite Specifications. 

Section 1. General Conditions — All work included 
under the specifications for granite is to be subject to the 
general conditions hereinbefore written for the entire work. 

Section 2. Material— All granite shall be of compact 
structure, hard and practically non-absorbent, and equal in 
durability and strength to the best granite of the kind required. 
Granite shall be (mention color, tone and grain) and of the 
kind designated as (mention name) granite from quarries at 
(mention location). Granites designated as (mention names 
and quarries), will also be considered. In submitting estimates, 
the contractor shall state the name of granite, and quarry, 
upon which his proposal is based. 

Section 3. Quarry and Plant — Granite must be obtained 
from approved, well-known quarries having capacity and 
facilities for furnishing the quantity, sizes, and quality of 
granite required, and the cutting and finishing must be done 
by firms properly equipped to produce the finished material 
without causing delay in the progress of the work. Evidence 
to this effect must be submitted if required by the architect. 

Section 4. Quality — All the granite shall be selected to 
meet the requirements of these specifications and shall be 
absolutely sound and free from seams or other defects which 
would impair its strength. Exposed surfaces shall be free 
from spots, stain, discoloration, knot formations, spalls, chips 
or other defects, which would impair the appearance of the 
work, except that in inconspicuous places a reasonable number 
of knot spots or texture variations inherent to the particular 
granite proposed may be permissible if samples showing the 
maximum of such characteristics he submitted to, and approved 
by, the architect. 

In quarrying the granite the blocks shall be so selected 
that any variations in color permitted by the architect will be 
uniformly distributed throughout the exposed surfaces of the 
walls and other portions of the work. If granites from dif- 
ferent quarries are used such granites shall be similar in tex- 
ture and shall satisfactorily match in color and lone through- 
out the work. 

Section 5. Work: Included — The work to be done by 
the contractor under the heading of Granite shall include the 
furnishing, delivery and setting in place and completion of 
all granite work as required by the drawings and herein 
specified. 

The work generally shall include (state portions of work 
to be of granite). 

U -State any portions features whi< 

granite or not to be included in this contract 

Section 6. Sikh* Drawings— The granite contractor shall 
prepare all necessary shop drawings, showing the bedding, 
bonding, and jointing of all the .uranite work and typical and 
special anchoring of same. The dimensions and setting num- 
ber of each granite stone shall he indicated upon the drawing 
which shall be submitted and approved by the architect as re- 
quired under general conditions. Xo cutting shall be done or 
work completed except from :hop drawing which have been 
approved by the architect. 

Section 7, Corner Stone" The granite contractor -hall 
furnish and set where indicated on the drawing i or as directed) 
a corner stone of the required dimensions, having an inscrip- 
tion cut thereon in accordance with the drawings and n 
to receive the copper box to 1 e furnished by the < general 
contractor). 
*If required. 

- Ai'ur the awi contract 2 

samples of each kind of granite required 8 bj B by 2 in., show- 
ing tl variation in quality, color and texture that 
will occur in any granite winch will be used, -hall he submitted 
to the architect. Upon approval of the>e samples, one of each 
shall 1 e returned to the uranite contractor for use at the 
quarry or plant aid the other retained by the architect for 
comparison with work at the building. Sample- -hall he 
■ Ire- ed on the face ai e to -how finish required by 
the s] ite face may be split <>r dressed to the 

I ailed i> »r i another of 

the specified finishes called 

9 Finishes— The exposed surfaces of the 

granite shall be dressed a indicated on the drawn. 
ied herein. In general, surface finishes -hall be a 
low-,: From 2 in . le to level (state level or i 

-had he dressed with best < -tate finish— as polished, 

eight-CUt) work; from level (state level) to level (state level) 
shall be dressed with best (.-tate finish) work; and from level 



(state level) to top of parapet shall be dressed with best 
(state finish) work. 

Note — State here any exceptions to the above such as "treads of steps 

or platforms shall be finish;" "back of parapet and coping courses 

shall be finish," etc. 

The cut marks of all bush hammer work shall be vertical 
except a- noted. 

Soffits shall be hushed at right angles to the face. 

Faces of key blocks and voussoirs shall be bushed (state 
whether vertical or radial). 

Top surfaces of window and door sills, steps, copings, 
washes and projecting courses shall be bushed at right angles 
to the nosing. 

Moulded surfaces shall be bushed parallel to the direction 
of the mouldings. 

Note — Mention other specific instructions on direction of bushing. 

Si i Tiox 10. Cittixg— All exposed surfaces must be out- 
of-wind, tree front waves, projections or depressions and 
faces of granite in the sam^ plane must be absolutely flush at 
joints. Arrises must be cut sharp and true to square or pattern 
and continuous with adjoining arrises. 

Slight inequalities which may occur in setting shall be 
trimmed to the proper surfaces and refinished equal to the 
original finish. 

Section 11. Bkds and Join is— Beds shall he horizontal 
and shall be cut full and square for a distance of at least 2 
in. back from the face, from which point they may fall off not 
to exceed 1 in. in 12 in.; and shall be reasonably free from 
large depressions and cuppings, which might impair the sta- 
bility of the work. 

Joints shall he dressed at right angles to the face for at 
least \Yi in. back from which point they may fall away, not to 
exceed V/* in. in 12 in. 

Backs of granite stones shall he scabbled or split to 
approximate vertical surfaces which shall not vary more than 
1 in. in 12 in. from the true vertical, nor vary more than 1 in. 
either way from the thickness called for on' the drawing. 

Section 12. Jointing— The jointing of the granite work 
shall be as shown on the drawings and no additional joints will 
be permitted except upon written consent of the architect. 
The joints shall he uniformly ,« in. (or ,' 4 in.) in thickness. 

Section 13. Bonding— The bonding of various portions 
of the work shall he a- shown on drawings. Alternate courses 
of granite shall bond at least 4 in. with the hacking except 
where otherwise shown. Xo granite stone -hall have less than 
4 in. bed; projecting courses shall have beds equal to the pro- 
jections unless otherwise shown. Where brick backing is re- 
quired the granite shall not go closer than 4 1 .. in. to the inside 
of the brick wall. Where granite facing occurs at grades it 
shall extend nowhere less than 4 in. below grade unless other- 
wise shown. 

Se< now 14. Kjvi m- and Returns— Reveals of all open- 
ings, unless otherwise shown shall be cut solid without vertical 
joints. Returns shall he not less than indicated on the draw- 
Mi tering of granite stones at corners will not be per- 
mitted. 

Section 15. Mouldings -Granite -tone- forming continu- 
ous moulded courses -hall he of uniform profile on the face 
with continuous unbroken line- absolutely flush at the joints 
and with the surface- free from projection- or depressions 
and out-of-wind. 

ion K Washes and Drips— All exterior projecting 
granite stones and all exterior sills, steps, platforms, i 
and other stones \\uh exposed top surfaces, -hall be cm with 

a wash on top. Where other work is built upon such \ 
-lone-, they shall be cut with raised seats and lugs to form level 
beds for work built upon them. 

All projecting granite stone, such a- -ill-, cornices, copings, 
etc.. -hall have a groove drip cut on the underside unless 
otherwise detailed. 

All exterior door sills -hall he cut with raised thresholds 
otherwise shown. 

Section 17. Miscei Mouldings and projections 

pi he subjected to pressure; and granil having 

Projed rs which have weight of any kind hearing 

upon the upper surface shall have seats cut to hear such 

- .and in all cases the edges of mouldings or proie. 
mu-t be ki- 
ll all be cut for flashing and counter flashing as 
required. 

'la-ter models of all orna- 
mental and carved work, -hall he furnished to 
tractor as hereinbefore specified. 



Plate No. 17, Somes Sound 
Granite, 

( hnrrv at Mount Desert, 
Me. 

Quarried and cut by : 
Booth Bros. & Hurricane 

Isle Graniti i 
(Main Office) 208 Broadway, 
New York, X. Y. 



U K 













Plate No. 18, Rockport Sea- 
Green Granite. 

Quarr y at Rockport , 
Mass. 

Quarried and cut by : 

Rockport Granite Co. 

(Main Office) Rockport, 

Mass. 







^V./^ 

'^•5** 









Plate No. 19, Conway Green 
Granite. 

Quarry at Redstone. 
N. H. 

Quarried and cut by : 
Mai \k & \i:\\ I I vmpsh ire 

Granite < i >rpi (ration 

'Main Office) North Tay, 

Me. 




Specifications (Continued). 

Where necessary for the proper execution of the work, 
models will be delivered at the plant of the granite contractor 
free of expense to him, to be used by him for the purpose of 
roughing and such carving as may be done at the plant, the 
granite contractor to carefully preserve these models for re- 
shipment to the building if required. The expense of handling 
and re-crating for shipment at the plant to be borne by the 
granite contractor. 

Section 19. Roughing for Carving— No roughing for 
carved work is to be done from drawings but from approved 
models only. Sufficient stock in all cases shall be left for the 
carving and the granite shall be roughed to suitable form and 
condition for the carver. The cutter and carver shall co- 
operate in the method of securing the proper roughing for 
ornamental work. 

Section 20. Carving* — Carving may be done at the site 
either before or after the granite is set or the work may be de- 
livered at the site already carved. In case the carving is done at 
the plant or at the site before being set in place, this contractor 
shall do all necessary refinishing or retouching to make the 
carving conform to the models and to the satisfaction of the 
architect. All carved ornament shall be executed by hand by 
skilled carvers in a spirited and artistic manner and in strict 
accordance with the approved models. 

Where carving is done after the work is set all necessary 
staging and protection shall be furnished by the general con- 
tractor, and if required the models shall be hoisted into position 
and properly secured to the scaffolding for the convenient use 
of the carvers by the general contractor. 

Inscriptions, lettering or numerals if required shall be 
clean cut and in accordance with the models, if provided, or 
otherwise with the full sized details of same. The incised sur- 
faces of lettering shall be cut smooth and accurately to the full 
depth and section shown on the models or drawings. 

te — If carving is to be done by others than the granite contractor 
same should be noted here — and this specification modified to suit conditions. 

Section 21. Crating and Shipping — This contractor shall 
properly crate the finished granite for shipment, the crating 
being so constructed as to properly protect the edges and sur- 
faces of the exposed portions of the work during shipment and 
handling prior to setting same. Due precaution shall be taken 
to use crating material which will not stain or discolor the 
exposed surfaces of granite ; and especial care shall be used 
to protect and suitably note any delicate portion where extra 
care should be observed in handling. 

The finished granite properly crated shall be carefully 
loaded for shipment by this contractor who shall exerci-c .ill 
necessary precautions in loading to withstand the usual hazards 
in transit. 

Section 22. Precaution Against Stain— Special precau- 
tions shall be taken in the setting to guard against possible 
seepage through the joints of moisture from the mortar or 
material used in backing up the granite work, which will cause 
discoloration around the face joints or surface of the granite. 
At least 1- hours before the granite is set, all surfaces not 
exposed shall be thoroughly coated with an approved damp- 
proof compound to within 1 in. of the exposed face. After 
the granite is set, and before backing up, another coat of the 
same dampproofing compound shall be applied to the back for 
the special purpose of covering the backs of the mortar joints. 
The painting of the granite may be omitted with the 
approval of the architect when it is definitely known that the 
-citing mortar will not stain the granite, but the hacks of the 
mortar joints should be dampproofed in any event to guard 
against seepage. 

If the first coat of dampproofing is applied at the mill, the 
setting numbers must be painted conspicuously over the damp- 
•nil. 

The granite shall at all times be protected from stain and 
upon deliver) at the site shall be kept stacked on timber or 
platforms at least 4 in. above the ground, until set in place in 
the wall. 

Under no circumstances shall salt be used tor thawing out 
Lewi- holes or otherwise in connection with the granite work. 
Si tti\"<, — Each granite stone shall be brushed 
clean and drenched immediately before being set. Each piece 
-hall he carefully bedded in a full bed of non-staining mortar 
tapped home with a wooden mallei to a full and -(did 
bearing. 

The face of the granite work shall be kept free from 
mortar at all til 

Granite facing shall not in any case be built up more than 
two courses ahead of the backing and no stone having a greater 
width of bed than the one below it shall be set until the lower 
course is backed up. 



All surplus mortar shall be immediately raked out to a 
depth of at least 1 in. and every precaution taken to prevent 
stones bearing upon the edges. 

Sills, etc., subject to pressure, shall be bedded only at the 
ends. 

The cement in the mortar used for setting all granite work 
where the joint is exposed to the weather shall be made water- 
proof with a satisfactory waterproofing compound, mixed with 
the mortar. 

The sand used in all setting mortar shall be such as to 
cause no stain or chemical action with the cement. 

Section 24. Anchors. Dowels, etc. — All bolts, expansion 
bolts, anchors, ties, etc., required in the setting of the granite 
work, will be furnished to the granite contractor. All ashlar 
shall be anchored to the backing with heavily galvanized 
wrought iron anchors Y\ by 1J4 in. turned down into the 
granite 1J4 in- ar >d extending into the backing 8 in., if the 
thickness of wall permits; the end to be turned up l 1 /- in. into 
the backing. There shall be at least two anchors to every 
-time whose length exceeds its height and in general there shall 
be not less than two anchors to each superficial square yard of 
ashlar. 

Note — Special anchoring for heavy cornices and overhanging courses, 
cramps, dowels, etc. for parapets, balustrades pilasters and columns, etc., 
should be suitably described or shown according to the requirements of 
the work. 

Section 25. Boxing and Protection — All granite work 
must be protected from damage during the progress of the 
work and until the completion of the building. 

The genera! contractor shall provide the necessary protec- 
tion, covering all projections, top surfaces, angles, etc., pro- 
tective boxing to be securely fastened in position and securely 
nailed throughout with galvanized iron nails. No lumber or 
material to be used which would in any way stain or deface 
the granite work. 

All necessary forms, centers, scaffolding, etc., required by 
the setter or carver to be furnisher! by the general contractor. 

- tion 26. Pointing and Cleaning— After the comple- 
tion of the granite \v<>rk or at such time thereafter as all 
liability from stain of other operations on the building is 
passed, and when there is no danger therefrom the whole of the 
granite work shall be carefully cleaned down, removing all dirt, 
mortar, stains, and other defacements. 

The use of wire brushes, acids or solutions which might 
cause discoloration will not be permitted. 

All face joints shall be raked out to a depth of not less 
than 1 in., brushed clean, thoroughly wetted, and filled with 
pointing mortar and then carefully jointed. The pointing mor- 
tar must be packed solidly into all joints, completely filling the 
same; and the form of joint shall be as directed by the 
architect. 

Vertical joints in the top courses of uncovered cornices 
having a projection of 8 in. or more shall be filled with mortar 
by grouting to within 3 in. of the top of the granite, then 
calked with picked oakum and filled with molten lead, calked 
against the edges and slightly convex at the top — taking care 
that the oakum is kept at least 2 in. away from the face and 
top of granite. 

Joints in the upper surfaces of projecting stones which are 
not s<> protected and in all platforms, su-ps and coping, shall be 
raked out at least 2 in. deep and thoroughly grouted Hush with 
the surface of the granite. 

Pointing and cleaning shall start at the top and be con- 
tinued until such work is completed. 

Section 27. Defective Work — No patching or hiding of 
defects will be permitted. Defective granite stones shall be 
replaced with perfect ones, except in extreme cases where a 
stone has been damaged through no fault of the granite con- 
tractor, and where it is possible and practicable to remedy the 
defect without in any way impairing the appearance, strength 
or durability of the work — and then only with the approval and 
under the supervision of the architect — and where a satisfactory 
allowance has been agreed upon which shall be deducted from 
the contract price. 

Specifications — Short Form. 

A short form of Granite Specifications has 
prepared by the Association for iw where a com- 
paratively small amount of granite is required, hut in 
which the standards of workmanship and other - 

should conform to requir I forth in detail 

in the above complete form. For ! uate space 

this short form has- been omitted from this 
but will be sent by the Secretary t<> any archil-' 



m